Formation of long-period stacking-ordered (LPSO) structures and microhardness of as-cast Mg-4.5Zn-6Y alloy
文献类型：期刊论文
| 作者 | Mao, Pingli1,2; Xin, Yan1; Han, Ke1; Liu, Zheng2; Yang, Zhiqing3 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2020-03-10 |
| 卷号 | 777页码:8 |
| 关键词 | Magnesium alloy Long-period stacking-ordered structure Formation and growth mechanism Transmission electron microscopy (TEM) |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2020.139019 |
| 通讯作者 | Mao, Pingli(pinglimao@yahoo.com) ; Han, Ke(han@magnet.fsu.edu) |
| 英文摘要 | Long-period stacking-ordered (LPSO) structures formed in both the a-Mg component and the interdendritic component in as-cast Mg-4.5Zn-6Y-0.5Zr (wt.%) alloy were studied from micro to atomic scales. Inside the alpha-Mg component, stacking-ordered structure took three forms: single unit, scattered cluster, and a single layer of short range 18R structures. Chemical ordering of clusters of Zn and Y formed in the short range scale but not in the long range. Inside the interdendritic component LPSO-layered structure took two forms: 18R and 14H LPSO. Long-range 18R formed at locations with high concentrations of Zn and Y. 14H LPSO phase formed at the edge of any layer of 18R LPSO phase, sandwiched between 18R and alpha-Mg band. We concluded that the formation of LPSO had occurred in two distinct steps. First, Zn and Y atoms were segregated into two adjacent atomic layers of the original hexagonal close-packed matrix. Then, the nucleation of stacking fault occurred, followed by the growth of a stacking fault, which attracted more Zn and Y atoms into four constitutive close-packed layers, forming a new segment of an LPSO structural unit. |
| 资助项目 | National Science Foundation[DMR-1157490] ; National Science Foundation[DMR-1644779] ; State of Florida ; High Level Innovation Team of Liaoning Province[XlYC1908006] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000521512000020 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Science Foundation ; State of Florida ; High Level Innovation Team of Liaoning Province |
| 源URL | [http://ir.imr.ac.cn/handle/321006/138138]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Mao, Pingli; Han, Ke |
| 作者单位 | 1.Florida State Univ, Natl High Magnet Field Lab, 1800 E Paul Dirac Dr, Tallahassee, FL 32310 USA 2.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mao, Pingli,Xin, Yan,Han, Ke,et al. Formation of long-period stacking-ordered (LPSO) structures and microhardness of as-cast Mg-4.5Zn-6Y alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,777:8. |
| APA | Mao, Pingli,Xin, Yan,Han, Ke,Liu, Zheng,&Yang, Zhiqing.(2020).Formation of long-period stacking-ordered (LPSO) structures and microhardness of as-cast Mg-4.5Zn-6Y alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,777,8. |
| MLA | Mao, Pingli,et al."Formation of long-period stacking-ordered (LPSO) structures and microhardness of as-cast Mg-4.5Zn-6Y alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 777(2020):8. |
入库方式： OAI收割
来源：金属研究所
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